/* ============================================
   RESET & BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Palette più sofisticata */
    --primary-color: #1a1410;
    --primary-light: #2c1810;
    --secondary-color: #8b6f47;
    --secondary-light: #a68a61;
    --accent-color: #c9a961;
    --accent-light: #d4b876;
    --light-bg: #faf8f5;
    --lighter-bg: #ffffff;
    --white: #ffffff;
    --text-dark: #1a1410;
    --text-medium: #4a4a4a;
    --text-light: #6b6b6b;
    --border-color: #e5dfd4;
    --shadow-light: rgba(26, 20, 16, 0.05);
    --shadow-medium: rgba(26, 20, 16, 0.1);
    --shadow-strong: rgba(26, 20, 16, 0.15);
    
    /* Typography - Font più professionali */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-subheading: 'Cormorant Garamond', serif;
    --font-body: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --container-padding: 24px;
    --card-padding: 40px;
    
    /* Transitions */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.8rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    box-shadow: 0 2px 20px var(--shadow-light);
    padding: 1rem 0;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: 1px;
}

.nav-brand .material-symbols-outlined {
    font-size: 32px;
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
    letter-spacing: 0.3px;
}

.nav-menu a .material-icons {
    font-size: 18px;
    opacity: 0.7;
    transition: var(--transition-fast);
}

.nav-menu a:hover .material-icons {
    opacity: 1;
    color: var(--accent-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color), var(--secondary-color));
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: 15px 35px;
    border-radius: 5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #2c1810 0%, #5a3a21 100%);
    background-image: url('../images/hero-background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(44, 24, 16, 0.7);
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white);
    max-width: 900px;
    padding: 0 20px;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.8rem;
    font-family: var(--font-heading);
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid var(--white);
    border-radius: 50px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    width: 6px;
    height: 6px;
    margin-left: -3px;
    background: var(--white);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        top: 10px;
    }
    100% {
        opacity: 0;
        top: 30px;
    }
}

/* ============================================
   SECTION HEADERS
   ============================================ */

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--accent-color);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: 25px;
}

/* ============================================
   PRODUCT SECTION
   ============================================ */

.product-section {
    padding: var(--section-padding) 0;
    background: var(--light-bg);
}

.product-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.product-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.product-text strong {
    color: var(--secondary-color);
}

.product-image img {
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* Specs Grid */
.specs-container {
    margin-bottom: 80px;
}

.specs-container h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 40px;
    font-size: 2.2rem;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.spec-card {
    background: var(--white);
    padding: var(--card-padding);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px var(--shadow-light);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.spec-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.spec-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px var(--shadow-medium);
    border-color: var(--accent-light);
}

.spec-card:hover::before {
    transform: scaleX(1);
}

.spec-icon {
    margin-bottom: 20px;
}

.spec-icon .material-symbols-outlined {
    font-size: 48px;
    color: var(--accent-color);
    font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 48;
}

.spec-card h4 {
    color: var(--primary-color);
    margin-bottom: 12px;
    font-size: 1.2rem;
    font-weight: 600;
}

.spec-card p {
    color: var(--text-light);
    margin: 0;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Properties Section */
.properties-section {
    background: var(--white);
    padding: 60px;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 30px var(--shadow-light);
}

.properties-section h3 {
    color: var(--primary-color);
    margin-bottom: 40px;
    text-align: center;
}

.properties-list {
    display: grid;
    gap: 30px;
}

.property-item {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 24px;
    background: var(--light-bg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-color);
    transition: var(--transition);
}

.property-item:hover {
    transform: translateX(8px);
    box-shadow: 0 4px 20px var(--shadow-light);
}

.property-icon {
    flex-shrink: 0;
}

.property-icon .material-symbols-outlined {
    font-size: 40px;
    color: var(--secondary-color);
    font-variation-settings: 'FILL' 1, 'wght' 300, 'GRAD' 0, 'opsz' 40;
}

.property-content {
    flex: 1;
}

.property-content strong {
    display: block;
    color: var(--primary-color);
    font-size: 1.15rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.property-content p {
    color: var(--text-light);
    margin: 0;
    line-height: 1.7;
}

/* ============================================
   APPLICATIONS SECTION
   ============================================ */

.applications-section {
    padding: var(--section-padding) 0;
    background: var(--white);
}

.applications-grid {
    display: grid;
    gap: 80px;
}

.application-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.application-card:nth-child(even) {
    direction: rtl;
}

.application-card:nth-child(even) .application-content {
    direction: ltr;
}

.application-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 40px var(--shadow-medium);
}

.application-image img {
    width: 100%;
    aspect-ratio:1;
    object-fit: cover;
    transition: var(--transition-slow);
}

.application-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26,20,16,0.7), rgba(139,111,71,0.5));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.application-overlay .material-symbols-outlined {
    font-size: 80px;
    color: white;
    font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 48;
    transform: scale(0.8);
    transition: var(--transition);
}

.application-image:hover .application-overlay {
    opacity: 1;
}

.application-image:hover .application-overlay .material-symbols-outlined {
    transform: scale(1);
}

.application-image:hover img {
    transform: scale(1.05);
}

.application-content h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 2rem;
}

.application-content h3 .material-icons {
    font-size: 32px;
    color: var(--accent-color);
}

.application-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 20px;
}

.application-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.tag {
    display: inline-block;
    padding: 8px 16px;
    background: var(--light-bg);
    color: var(--secondary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.tag:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

/* ============================================
   ADVANTAGES SECTION
   ============================================ */

.advantages-section {
    padding: var(--section-padding) 0;
    background: var(--light-bg);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.advantage-card {
    background: var(--white);
    padding: 45px 35px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: 0 4px 20px var(--shadow-light);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--secondary-color));
    transition: width 0.4s ease;
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 50px var(--shadow-strong);
    border-color: var(--accent-light);
}

.advantage-card:hover::before {
    width: 100%;
}

.advantage-icon {
    margin-bottom: 24px;
}

.advantage-icon .material-symbols-outlined {
    font-size: 56px;
    color: var(--accent-color);
    font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 48;
    transition: var(--transition);
}

.advantage-card:hover .advantage-icon .material-symbols-outlined {
    transform: scale(1.1) rotate(5deg);
    color: var(--secondary-color);
}

.advantage-card h3 {
    color: var(--primary-color);
    margin-bottom: 16px;
    font-size: 1.35rem;
}

.advantage-card p {
    color: var(--text-light);
    margin: 0;
    line-height: 1.7;
    font-size: 0.95rem;
}

/* Why Choose Section */
.why-choose-section {
    background: var(--white);
    padding: 60px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.why-choose-section h3 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 30px;
}

.intro-text {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 50px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.step {
    text-align: center;
    padding: 20px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--accent-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step h4 {
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.step p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0;
}

/* ============================================
   PROCESS SECTION
   ============================================ */

.process-section {
    padding: var(--section-padding) 0;
    background: var(--white);
}

.spalting-explanation {
    max-width: 900px;
    margin: 0 auto 60px;
}

.explanation-text {
    text-align: center;
    margin-bottom: 50px;
}

.explanation-text h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.explanation-text p {
    font-size: 1.1rem;
    color: var(--text-light);
}

.spalting-steps {
    display: grid;
    gap: 30px;
}

.spalting-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background: var(--light-bg);
    padding: 25px;
    border-radius: 10px;
    transition: var(--transition);
}

.spalting-step:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.step-badge {
    min-width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.spalting-step h4 {
    color: var(--primary-color);
    margin-bottom: 8px;
}

.spalting-step p {
    color: var(--text-light);
    margin: 0;
}

.process-conclusion {
    text-align: center;
    font-size: 1.15rem;
    font-style: italic;
    color: var(--secondary-color);
    margin-top: 40px;
    padding: 30px;
    background: var(--light-bg);
    border-radius: 10px;
}

/* Sustainability Section */
.sustainability-section {
    margin-top: 80px;
    background: var(--light-bg);
    padding: 60px;
    border-radius: 10px;
}

.sustainability-section h3 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
}

.sustainability-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 50px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.sustainability-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.sustainability-item {
    background: var(--white);
    padding: 35px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: 0 4px 20px var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.sustainability-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px var(--shadow-medium);
    border-color: var(--accent-color);
}

.sustainability-icon {
    margin-bottom: 20px;
}

.sustainability-icon .material-symbols-outlined {
    font-size: 48px;
    color: var(--accent-color);
    font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 48;
}

.sustainability-item h4 {
    color: var(--primary-color);
    margin-bottom: 12px;
    font-weight: 600;
}

.sustainability-item p {
    color: var(--text-light);
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ============================================
   GALLERY SECTION
   ============================================ */

.gallery-section {
    padding: var(--section-padding) 0;
    background: var(--light-bg);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact-section {
    padding: var(--section-padding) 0;
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.contact-info > p {
    font-size: 1.05rem;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.8;
}

.contact-details {
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: var(--white);
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.contact-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 20px var(--shadow-light);
    border-color: var(--accent-color);
}

.contact-item .material-icons {
    font-size: 28px;
    color: var(--accent-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-info {
    flex: 1;
}

.contact-info strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 1.05rem;
}

.contact-info p {
    margin: 0;
    color: var(--text-medium);
}

.contact-info a {
    color: var(--secondary-color);
    transition: var(--transition-fast);
}

.contact-info a:hover {
    color: var(--accent-color);
}

/* Social Contact Section */
.social-contact {
    margin-top: 40px;
    padding: 30px;
    background: var(--light-bg);
    border-radius: var(--radius-md);
}

.social-contact h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
}

.social-contact h4 .material-icons {
    color: var(--accent-color);
}

.social-links-contact {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition-fast);
}

.social-link svg {
    width: 20px;
    height: 20px;
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow-medium);
}

.social-link:hover svg {
    transform: scale(1.1);
}

.availability-info {
    background: var(--light-bg);
    padding: 30px;
    border-radius: 10px;
}

.availability-info h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.availability-info p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.order-details {
    list-style: none;
}

.order-details li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
}

.order-details li:last-child {
    border-bottom: none;
}

.order-details strong {
    color: var(--secondary-color);
}

/* Contact Form */
.contact-form {
    background: var(--light-bg);
    padding: 40px;
    border-radius: 10px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.contact-form .btn-primary {
    width: 100%;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info h3 {
    color: var(--accent-color);
    margin-bottom: 20px;
}

.footer-info p {
    font-size: 0.95rem;
    opacity: 0.9;
    line-height: 1.8;
}

.footer-links h4,
.footer-social h4 {
    color: var(--accent-color);
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a:hover {
    color: var(--accent-color);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.social-links a {
    display: inline-block;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--accent-color);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    font-size: 0.9rem;
    opacity: 0.8;
    margin: 0;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 2.3rem;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .product-intro,
    .application-card {
        grid-template-columns: 1fr;
    }

    .application-card:nth-child(even) {
        direction: ltr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .navbar .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        padding: 30px;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
    }

    .navbar .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero {
        height: auto;
        min-height: 100vh;
        padding: 120px 0 60px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.4rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .specs-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .application-image img {
        height: 300px;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .why-choose-section,
    .sustainability-section,
    .contact-form {
        padding: 30px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .btn {
        padding: 12px 25px;
        font-size: 0.85rem;
    }

    .spec-card,
    .advantage-card {
        padding: 25px 20px;
    }

    .application-image img {
        height: 250px;
    }
}

/* ============================================
   UTILITIES
   ============================================ */

.text-center {
    text-align: center;
}

.mb-2 {
    margin-bottom: 2rem;
}

.mt-2 {
    margin-top: 2rem;
}